Why Skid Mark Why? Part 2

When Question Mark unlocked the door, he thought that he would see his wallet straight away. But Skid Mark (Question's brother) decided to put the wallet in a safe. The combination is three 2-digit numbers which can be expressed like this:

xx-xx-xx

You are given the following clues to work out the combination:

The total of the three numbers is 39.
The second number is half of the third number.
The first number is the third number minus 1.

Can you find Question's wallet in time? It's all up to you.

Answer

The combination is 15-08-16. Thank you for helping Question get his wallet back.Hide